package repeat3;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.security.PrivateKey;
import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: Hua YY
 * Date: 2024-10-11
 * Time: 9:07
 */
public class UdpEchoClient {
    private DatagramSocket socket = null;
    private String serverIp;
    private int serverPort;
    public UdpEchoClient(String serverIp , int serverPort) throws SocketException {
        this.serverIp = serverIp;
        this.serverPort = serverPort;
        socket = new DatagramSocket();
    }
    public void start() throws IOException {
        System.out.println("客户端启动");
        Scanner scanner = new Scanner(System.in);
        while(true){
            System.out.print("->");
            if (!scanner.hasNext()){
                break;
            }
            String request = scanner.next();
            DatagramPacket requestPacket = new DatagramPacket(request.getBytes(),
                    request.getBytes().length,
                    InetAddress.getByName(serverIp),serverPort);
            socket.send(requestPacket);
            DatagramPacket responsePacket = new DatagramPacket(new byte[4096] , 4096);
            socket.receive(responsePacket);
            String response =  new String(responsePacket.getData(),0,responsePacket.getLength());
            System.out.println(response);
        }
    }

    public static void main(String[] args) throws IOException {
        UdpEchoClient client = new UdpEchoClient("127.0.0.1",9096);
        client.start();
    }
}
